How to Add a Gallery Portfolio:
Step 1: Add a Feature Image: make it 500px X 500px
Step 2: Select ‘As part of One Page’
Step 3: Select the ‘One Page Portfolio Type’ tab.
Step 4: Set ‘Choose Hero Type’ to ‘Gallery’.
Step 5: Add your slider images. Do this my selecting the ‘Add Media’ button and choose the image you want to add to your gallery slider.